Keeley Hawes and David Morrissey star in a second series of the gripping thriller, which returns with a brand new case.

They are sensational as the parents of young Alice, who goes missing near the German army base where her family live, only to make a sudden return 11 years later.

Sounds like just the thing to bring Julien Baptiste (Tchéky Karyo), the indomitable French cop from the first series, out of retirement, especially when a groggy Alice mentions another missing girl Baptiste has long wanted to find.

But as the action cuts between 2014 and the present day, events move on in a startling fashion, with some remarkable twists and turns…